Tool holder



May 24, 1927. 1,629,547 J. H. SMITH TOOL HOLDER Filed Jan. 19. 1925 2 Sheets-Sheet 1 ATTORNEY.

J. H. SMITH TOOL HOLDER May 24 1927.

Filed Jan. 19, 1925 2 Sheets-Sheet 2 X J INVENT R. By y A TTORNEY.

v 30 VlGW which'wi ll appear as the description v ng fins projecting from the tapering" Patented May 24, 1927. v I r I v I v oN r-En STATES PATENT rancs mm HUGO smn'r'n, or person, n crzreen, 'Assienon r rein Wesson SALES coir- PANY, or nn'rnorr, .MICHIGAN, A Genresrron or mrcnrean.

root HOLDER.

Application filed January 19,1925. Serial No. 3,255.

My invention relates to a holder for on or about line 4-4 of Figure 6,-through counter-boring or other tools, shown in the the upper portion of the holder. i z'i'ccoinpanyin'g drawings andinore particu- Figure '5 is a vertical cross-sectional View iarly described in the following specification throughthe lower detachable portion of 5 and claims. v the hol'de receiving the shank of the tool. 60

7 One of the'objects'of this invention is to v Figure (3 is a similar sectional view with providea tool holder coinprisin'gtwo sepa' parts in elevation of the upper portion of ra'ble co-operating elements adapted to be the-holder supported in the spindle of a coupled together in driving "relation- 01m drill press.

10 of saidel'eine'nts being designed'i 'or-conneo Figure 7 isa cross-sectional viewftaken ti'on with thespindleoi a drill-press or other on or about line 77 of Figure -5'through machine, while the co-operating element is the planetary gearing housed within thc ada1i ted to receive the-shank of aboring or lower portion of the holder.

like tool; the construction being such that. Figure 8 is a fragmentary elevation of the first nan'ie'd element is adapted "to adthe lower detachable element of the holder just th'eelein'ent receiving theshank of the the annular gear-collar being removed to tool; whereby it may take up the wear of disclose one of the planetary gears, jour-' the latter; nalled in a peripheral groove in the holder.

A further object or" the invention is to Figure 9 is a cross-sectional view through 20 provide self-contained neans forejectingthe the lock'nut for retaining the annulargear tool iroin'the socket oi the holder when'it ollarjin position taken on or about line is desired :to remove or replace the same. '99 of Figure 5.

A :turther'object of the invention is to 'Figure 10 is a cross-sectional view taken provide means for securely locking the'tool on orabout line lO l0 of Figure. (i -through holder inithe-socketot its-cooperating eleth 1'B aining'screws for supporting the'adso IHGRlJ-SGCU'I GCl'tO the-spindle'o f the drill press justilble screw shaft. journalled' in] the upper and to insure a positive driving connection portion of the lit'ildi-ir. therewith. a I 'Figure 1-1 is a perspective view of abor- WVith the foregoing and other objects in ing tool showing its diametrically disposed proceeds the invention further resides in the shank, adapted to enter corresponding recombination and arrangement or" parts and esse's provided in the socket of the lower in the detailso-i construction hereinafter dedetachable portion "of the holder.

scribed and claimed it being understood Referring now to the letters of reference that changes may beniade in the precise einplaced upon 'tl-ie drawi-ngs:- bodiinent o'f the invention herein *disciosed it denotes the upper portion 01': tool without departing from the spiritor" the holder adapted for connection with the spindle oi'a drill press or other machine.

same.

In the drawings accompanying this speci- B deslgnatesrts tapering shank extending 7 ll) 'licatlonz iroin the socket portion 0, in which is 5 Figure 1 is a. side elevation of thetwo co housed a screw shaft Djourna'lled at (Z and operating eleinents coinprising the holder w l inthe walls connectingtheeocket portion iin'iassenible'd relation, with a portion broken with the-tapering shank. D indicates a away to disclose the locking key in the up projecting flange overlapping a shoulder (Z 45 per socket of the holder extending. into a. formed in the wall of the socket. longitudinalgroove formed in the shank of E indicatesa plurality of retaining screws the lower detachable element. f I supported in the wallof the socket portion Figure 2 is acrosssectional View taken on and overlapping the fla'nge D 'otthe screw or about line of Figure l,through the tln eaded shaft. E tlen'otes a split ring en 50 upper and lower co-operating portions of circling the retaining screws and lodgedin the holdcrin asse'inbledrelation. a concave.recess provided for its r ception Figure-3. is a cross-sectional viewtaken in theends of the screws; i I on or about line3'-3 of Figure 5th=rough F designates a gear formed on the upper the lower portion of the holder. end ofthe screw sha iit D-inuncslrwith.a plu- Figure is cross-sectional view .t'a'ken ral-ity' ofpl'anetary gears-G. r

H indicates a manually rotatable collar provided with an internal annular gear in mesh with the planetary gears G, j-ournalled in peripheral recesses formed in the wall of the shank.

I represents a retaining nut, tapped to receive the threaded end of the shank, to secure the collar H in position.

J denotes a driving key projecting from a longitudinal groove 7' formed in the socket portion C and secured thereto by rivets or other engaging means.

K indicates a co-operating element adapted to receive the tapering shank L of a boring or other tool. The shank L is provided with feathers L having parallel outer faces adapted to enter corresponding recesses M in the tapering socket M of the tool holder, thereby providing a driving connection between the same.

N designates a tubular shank provided with a longitudinal groove N adapted to receive the driving key J of the co-operating portion of the holder A. The tubular shank is also tapped at bl to receive the shaft D of the connecting element.

P denotes an adjustable shaft, screwed into the wall of the tubular shank, provided at its lower end with a relatively wide gear P in mesh with a plurality of planetary gears Q, journalled in peripheral recesses formed in the wall of the tool holder. P indicates an extension of the shaft P adapted to bear upon the end of the tool shank.

R indicates a manually rotatable collar formed with an internal annular gear R in mesh with the planetary gears Q.

S denotes a nut screwed upon the shank of the holder adapted to retain the rotatable collar R in position.

T indicates a split ring encircling the nut having one end T bent inwardly that it may enter a recess in the shank of the holder to secure the nut against accidental release.

Having now indicated the several parts by reference letters the construction and operation 10f my invention will be readily understooc The upper portion A of the tool holder is first engaged to the spindle of a drill press or like machine,the lower co-operating portion of the holder is then fitted with a tool, as for example that indicated in Figgure 11,-the projecting feathers L of which enter the recesses M in the socket of the holder. The tubular shank N of the element K is then inserted in the socket C of the upper cooperating element,-the key J of the latter entering into the longitudinal groove N of the tubular socket. The shaft D is then screwed into engagement with the threaded end la of the lower portion of the holder. Y

To take up any wear that may occur in the tool the collar G is manually rotated,

thereby turning the shaft D through the cooperation of the planetary gears H,the element K and the tool carried therein being thus raised or lowered and thereby adj usted relative to the upper supporting member and the work] When it is desired to remove the tool from the socket of the lower member K the collar 1% rotatedits annular internal gear rotating the planetary gears Q, thereby causing the shaft P to move downwardly between the planetary gears with which it remains in meshits end P bearing against the end of the tool shank, forcing the latter outwardly and thus releasing the tool.

To detach the lower portion K from itsv co-operating supporting member A, the collar G is rotated so as to disengage the shaft D from the screw threaded end of the tubular shank N of the lower member, whereupon the lattermay be removed from the socket of its co-operating element.

Having thus described my invention what I claim is:

1. A tool holder of the character described, comprising two cooperating detachable interlocking members operating as a single unit, one of which has means adapted for driving connection with a power operated machine also means to receive and support the other member,in turn adapted to sup port a cutting tool; means adapted for l0ngitudinally adjusting said members while remaining in interlocking relation with each other and means carried by one of said memhere for forcing the tool carried thereby from its supporting socket each of said means including a screw and gearing for rotating the screw.

2. A tool holder comprising two cooperating detachable slidably interlocking members adapted to operate as a unit, one of said members having means adapted for driving connection with a power operated machine and also means to receive and support the other member, in turn adapted to receive and support a cutting tool .in driving relation therewith; a rotatable shaft carried by said first named member adapted to engage the second member; means for manually rotating said shaft, whereby the second member may be adjusted longitudinally in relation to the first member and means carried by the second member adapted to bear upon the end of the tool, whereby it may be released from the socket of said member, said means including a screw and gearing for rotating the screw.

3. A tool. holder comprising two cooperating members adapted to operate as a unit and arranged in longitudinal alignment, one of the members forming an extension of the other member and having a shank fitting within and slidably interlocked with the same, one of said members having means adapted for driving connection with the spindle of a power driven machine and the other member being adapted to receive a cutting tool in driving relation thereto, means adapted for longitudinally adjusting said members while remaining in interlocked relation with each other, said means includ ing a screw and gearing for rotating the screw, a longitudinally movable shaft carried by the tool supporting member, and manually operated means having a threaded shaft arranged to engage the end of the tool to release the latter from the member supporting it.

4:. Adevice of the character described, comprising a member having a tapering socket and grooves to receive the tapering shank and fins of a cutting tool, said member having an interiorly threaded portion; a shaft provided at one end with a relatively wide gear and threaded at its opposite end to engage the interiorly threaded portion of said member; planetary gears journalled in peripheral recesses provided in said member in mesh with said gear; and a manually ro tatable collar with an internal annular gear in mesh with said planetary gears, whereby upon rotating said collar the shaft may be longitudinally adjusted to bear upon the end of the tool shank to force the latter from the socket of said member.

In testimony whereof, I sign this specification.

JOHN HUGO SMITH. 

